I didnt even read the article.
The title says it all. They want security. However, they will never compare to Firefox.
Firefox is given a program from the government to test for security flaws. On top of that, Firefox has its own team of security researchers and does most of their own. However, they too do offer bounty programs for flaws.
The Point. Offer all the money you want. I doubt any hackers have interest in helping Google out. You can get more money doing other things of interest.